I'mma do you one better.
Shut Down The Catalyst Store. Period. Full Stop.
We hear tons about how Catalyst is a bunch of freelancers and volunteers and is short-handed enough for it to take the better part of a month for a file to get uploaded. Fine, if that's how it is, don't waste effort running a storefront, there are other people who do that well enough. DriveThruRPG does a wonderful job selling your products, and as near as I can tell from the outside, does it without the headaches, bad press and resource sinkage that the company store generates.
Or, if you insist on perpetuating the PR black hole because certain products will only be sold though it, sell only those products.
Go back and count how many posts, how many threads, in the last three years, have been created by people having trouble with the store. I would think that the last thing a company run on a starvation budget by a skeleton crew should want, is to generate ill will and friction with their customers. Your best-case scenario with the store is that it works, and no one has problems with it. This is more or less to be expected of a storefront in the year 2017, so it's kinda taken for granted. nobody will go "man this is a really nice store, I should buy more."
On the other hand, if the store DOESN'T work, maybe you have a forgiving fan who doesn't get upset. Do you really want to have to rely on such a saint? Don't they deserve better? Much more likely, you frustrate, sadden or anger someone. I have to wonder, what benefit there is in risking that just to run your own storefront.
TL;DR - don't try and do everything yourself, let professionals handle it.